Not directly relevant, but my original 5040 was doing that long long time ago.
Mikeyboy's fix was to tighten the attachment screws on the power supply and reseat the ribbon cable. It worked then maybe it'll work with your 4K's now.

Sounds like a bad data file causing it. Kinda strange that it happens during recordings though. I figured it would happen when you pull up the channel guide, if that were really the problem. Not familiar with the 4K units though, all I've got are 5K ones.

thanx guys, i traced the issue back to my router. i looked there cause i had to switched out a 5k rtv that the tuner went dead as the thing i changed last a few days ago. the address reservation needed to change to the new rtv. in the process of diong that the 4k issue occured. weird and rebooting the router no joy. i put my old westell router as a quick fix with the dhcp off. it will take too long to reset the new router and put 20 reservations back right now. dont know if thatd work anyway.😃_________________my poop at srfrdanu1 4k*5k

bäd news this problm has come back and canned all my 4ks i cant connect to the internér without rebooting. when the guides run out theyre dead l tried laho dns that dont work ._________________my poop at srfrdanu1 4k*5k